1. To remove someone from your Livejournal, MySpace, Facebook, or other social networking site. Doing this is often seen as a passive-aggressive move, telling the person without telling them that you no longer want to be friends. It's also commonly a response to drama. Defriending someone often causes more drama. There are sometimes valid reasons for doing this.

2. A sarcastic/joking reference to definition (1). Said to a friend who's being mildly irritating, joking that their behaviour would cause the speaker to 'take them off their friendlist'.

1. a) "Can you believe Amy defriended me because I'm dating Chris? She only doesn't like him because he turned down her friend Nicole two years ago. How lame."

b) "Yeah, so I had to defriend Charlie. He kept cluttering up my friendlist with stupid memes, and we haven't even communicated in a year. We'll probably never see each other again, so there's no point.

2. Julie: "I really like Sawyer and Kate together on Lost!"
Sara: "Really? I prefer Jack and Kate, I don't really like Sawyer."
Julie, jokingly: "I can't believe you think that! Oh my god you are SO defriended!"

A newly-established term stemming from the internet social network crowd, meaning to remove someone from a list of friends. The term is misleading because usually neither of you were friends to begin with. "Defriending" is essentially a way of cutting off already useless communication with cyber-people.

1. Verb - the act of removing someone from your friends list on any social network.
1a. Verb - the act of ending a friendship with someone either on a social network or in the 3D world.

Synonym - see "unfriend"

He was tired of always inviting Dave to things and never once did Dave show up. Not to dinners, not to movies, not to free concerts, not to the clubs, nothing. Most of the time, he never even got a response, yay or nay. And Dave never invited him anywhere.

Hal was through with the whole thing and after all this time, finally, defriended the one guy he thought would be his pal forever.